So Jesus said to them, “Truly, truly, I say to you, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you.
53. Verily, verily, I say to you. The just resentment which Christ felt, “Un juste despit que Christ a conceu.” when he saw his grace rejected with such haughty disdain, constrained him to employ this oath. For he does not now make use of simple doctrine, but likewise mingles threatenings for the purpose of striking terror.
Whether this conference was with the Capernaites, in whose synagogue Christ now was, or with those who came from the other side of the sea, is not certain nor material; however, it is an instance of Christ's condescension that he gave them leave to ask him questions, and did not resent the interruption as an affront, no, not from his common hearers, though not his immediate followers.
Commenting on John 6:28-59
For my flesh is meat indeed,.... Not in a corporeal, but in a spiritual sense; and the same is said of his blood: and my blood is drink indeed, &c. that is, they are both "truly" meat and drink, as the Vulgate Latin, Syriac, and Ethiopic versions render it; or are "true" meat and drink, as the Arabic version: in opposition to what was typical...